The Book of Purgatory is a comic adaptation/reinterpretation + crossover story between classical works of literature, depicting the stories themselves, and what could have happened after their endings. At the forefront of this story is Doctor Faust, and his demonic companion Mephistopheles.
Now, the story introduces the protagonist’s companion on his journey, a demon who takes the challenge of impressing him with something, anything that a corrupted human’s life can offer.
Some quotes are directly from the Kaufmann English translation of Goethe’s Faust.